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Operating Systems Linux How to call a proc file from *.c program? Post 98912 by pat_and_cami on Monday 13th of February 2006 01:35:39 AM
Old 02-13-2006
How to call a proc file from *.c program?

Hi,

I am new to Linux programming. As part of learning, I need to create a *.c program where we call certain /proc files (i.e. such as meminfo, version, uptime, etc...) from our program. Can anyone point me to a simple program on how one would do this (i.e. can you directly call uptime() or ... straight from my program - I would be very surprised if one could)?


Thanks,

Pat//
 

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UPTIME(1)							Linux User's Manual							 UPTIME(1)

NAME
uptime - Tell how long the system has been running. SYNOPSIS
uptime uptime [-V] DESCRIPTION
uptime gives a one line display of the following information. The current time, how long the system has been running, how many users are currently logged on, and the system load averages for the past 1, 5, and 15 minutes. This is the same information contained in the header line displayed by w(1). System load averages is the average number of processes that are either in a runnable or uninterruptable state. A process in a runnable state is either using the CPU or waiting to use the CPU. A process in uninterruptable state is waiting for some I/O access, eg waiting for disk. The averages are taken over the three time intervals. Load averages are not normalized for the number of CPUs in a system, so a load average of 1 means a single CPU system is loaded all the time while on a 4 CPU system it means it was idle 75% of the time. FILES
/var/run/utmp information about who is currently logged on /proc process information AUTHORS
uptime was written by Larry Greenfield <greenfie@gauss.rutgers.edu> and Michael K. Johnson <johnsonm@sunsite.unc.edu>. Please send bug reports to <albert@users.sf.net> SEE ALSO
ps(1), top(1), utmp(5), w(1) Cohesive Systems 26 Jan 1993 UPTIME(1)
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